问题描述：
1、The flowers___sweet in the botanic garden attract the visitors to the beauty of nature.
A to smell B smelling C smelt D to be smelt
2、The old man,___abroad for twenty years,is on the way back to his motherland.
A to work B working C to have worked D having worked
3、The secretary worked late into the night,___a olng speech for the president.
A who prepares B preparing C prepared D was preparing
4、The storm left,___a lot of damage to this area.
A caused B to have caused C to cause D having caused
5、Reading is an experiencd quite different from watching TV;there are pictures____in your mind instead of before your eyes.
A to form B form C forming D having formed
A to smell B smelling C smelt D to be smelt
2、The old man,___abroad for twenty years,is on the way back to his motherland.
A to work B working C to have worked D having worked
3、The secretary worked late into the night,___a olng speech for the president.
A who prepares B preparing C prepared D was preparing
4、The storm left,___a lot of damage to this area.
A caused B to have caused C to cause D having caused
5、Reading is an experiencd quite different from watching TV;there are pictures____in your mind instead of before your eyes.
A to form B form C forming D having formed
问题解答：
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